body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

header, footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 1rem 0;
}

main {
    padding: 1rem;
}

figure {
    text-align: center;
}

img {
    max-width: 100%;
    height: auto;
}